EP 0976307 A1 20000202 - POSITIVE WORKING PHOTODEFINABLE RESIN COATED METAL FOR MASS PRODUCTION OF MICROVIAS IN MULTILAYER PRINTED WIRING BOARDS
Title (en)
POSITIVE WORKING PHOTODEFINABLE RESIN COATED METAL FOR MASS PRODUCTION OF MICROVIAS IN MULTILAYER PRINTED WIRING BOARDS
Title (de)
MIT POSITIV ARBEITENDEM PHOTOSTRUKTURIER BAREM HARZ BESCHICHTETES METALL ZUR MASSENHERSTELLUNG VON MIKROKONTAKLÖCHERN IN MEHRSCHICHTIGEN LEITERPLATTEN
Title (fr)
METAL REVETU DE RESINE POSITIVE PHOTO-DEFINISSABLE POUR PRODUCTION DE MASSE DE TROUS D'INTERCONNEXION A L'ECHELLE MICROSCOPIQUE DANS DES TABLEAUX DE CONNEXIONS MULTICOUCHE IMPRIMES
Publication
Application
Priority
- US 9807220 W 19980413
- US 4432797 P 19970416
- US 5426398 A 19980403
Abstract (en)
[origin: WO9847332A1] High density built-up multilayer printed circuit boards are produced by constructing microvias with positive working photoimageable dielectric materials. A positive working photosensitive dielectric composition (4) on a conductive foil (2) is laminated to conductive lines (6) on a substrate (8). After imaging the foil (2), and imaging and curing the photosensitive dielectric composition (4), vias (14) are formed to the conductive lines (6). Thereafter the conductive lines (6) are connected (16) through the vias (14) to the conductive foil (2), and then the conductive foil (2) is patterned.
IPC 1-7
IPC 8 full level
H05K 3/00 (2006.01); H05K 3/46 (2006.01); H05K 3/38 (2006.01)
CPC (source: EP KR)
H05K 3/0023 (2013.01 - EP); H05K 3/46 (2013.01 - KR); H05K 3/4652 (2013.01 - EP); H05K 3/381 (2013.01 - EP); H05K 3/4644 (2013.01 - EP); H05K 2201/0355 (2013.01 - EP); H05K 2203/0551 (2013.01 - EP); H05K 2203/1152 (2013.01 - EP)
Citation (search report)
See references of WO 9847332A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9847332 A1 19981022; EP 0976307 A1 20000202; JP 2000516771 A 20001212; KR 20010006494 A 20010126
DOCDB simple family (application)
US 9807220 W 19980413; EP 98914668 A 19980413; JP 54409698 A 19980413; KR 19997009584 A 19991016